Spokane, Portland and Seattle Railway Authorization for Expenditure (AFE). President's AFE Number 880. Piping water for sectionman's cottage at Holbrook, Oregon. Chief Engineer/Standard Maintenance Procedure AFE Number CE 942. Correspondence File Number A305-9. Portland Division. Other subject categories: Plumbing Water Pipe.

Spokane, Portland and Seattle Railway Engineering Drawing: Reinforcement Buttress, Bridge A15.3 (172.1) - Road, west of Holbrook, Oregon, Line Segment 440, Milepost 15.33. Sheet NO - 212, undated.

Spokane, Portland and Seattle Railway Engineering Drawing: Tie Plan, Bridge A16.9 (169), west of Holbrook, Oregon, Line Segment 440, Milepost 16.86. Sheet RR - 498, 1960.